Add this to your shell and it will scaffold a React component.

makeComponent.sh

NAME=$1
CAPITAL_NAME=$(tr '[:lower:]' '[:upper:]' <<< ${NAME:0:1})${NAME:1}

# Make directory
echo "Creating directory $NAME"
mkdir $1

# Make index,js
echo "Creating $NAME/index.js"
cat <<EOF >$NAME/index.js
import React from 'react';

// Styles
import styles from './$NAME.css';

export default class $CAPITAL_NAME extends React.PureComponent {
  render() {
    return (
      <div className={styles.$NAME}>
        $CAPITAL_NAME
      </div>
    );
  }
}
EOF

# Make stylesheet
echo "Creating $NAME/$NAME.css"
cat <<EOF >$NAME/$NAME.css
/* $CAPITAL_NAME component styles */

.$NAME {
  background-color: magenta;
}
EOF

# Make readme
echo "Creating $NAME/readme.md"
cat <<EOF >$NAME/readme.md
## $CAPITAL_NAME component

Example use of $CAPITAL_NAME component.

\`\`\`jsx
<$CAPITAL_NAME />
\`\`\`
EOF

echo "Success!"